Shomer Yisrael

Shomer Yisrael.
Shimor Shearit Yisrael.
V'al Yovad Yisrael.
Haomrim Shma Yisrael.

O Guardian of Israel, guard the remnant of Israel, and suffer not Israel to perish, who say, Hear, O Israel.
Trans​​​lat​ion from The Standard Prayer book by Simeon Singer (1915) (public domain).

Said during Tachanun.